Device for spreading asphaltic concrete



A ril 20, 1926. 1,581,784

- M. M. BUTLER DEVICE FOR SPREADING ASPHALTIG CONCRETE Filed Feb. 10, 1925 Patented .Apr. 210, 1926;

UNITED nnvrcn ron srnnnnme ASPHALTIC con'cnnrn.

. Application filedlebruary citizen of the United States, residing at Los Angeles, county of Los Angcles, and State of California, have invented a certain new and useful Device for Spreading Asphaltic Concrete, of which the following is a specification.

This" invention relates to road building machinery and especially to devices for sup-' plying surfacing materials to roadways in I a continuous, even and automatic manner. I

The invention is designed particularly to deposit a hot asphaltic concrete mix upon roadways and spread same evenly and continuously.

As now practiced, 'asphaltic concrete mixed in somecentral plant, is conveyed to the street or other point of deposit, wherethe eontentspf the conveyance are dumped. The load thus deposited is then shoveled and raked by hand labor to the depth required and desired. Owing to the dittlculty and almost impossible work of obtaining a regular and even surface by hand raking and manual labor-in general, road and roadways specification,

out the objects stated.

built on this plan, are uneven,'undulating and irregular, and unable to sustain the wear of traffic and retain a desirable even surface.

The object of this invention therefore is to obviate this need of manual attention to the hot concrete mix deposited upon a road bed and. to provide a simple and effective means for automatically spreading the pre-' pared mix over a'road bed in any desired thickness, evenly and expeditiously. 1

Other objects, advantages, and structural features for carying into effect the purposes" enumerated, will'appear from thesubj'oin'ed in connection with the accompanying drawing,which illustratesa form of embodiment oftlfe invention for carrying In the drawing,

Fig. 1 is a front view showing a form of device embodying the principle of the invention. 1 1

Fig. "2 is a rear view'partly broken to illustrate parts otherwise hidden.

Fig. 3 is a side View and Fig. 4 is a fragmentary rear view showing a means for heating and stirring the concretemix.

-The invention, as shown in a'preferred form in the drawing,embodies a receiver 1,

into which is arranged tobe deposited the 10, 1925. Serial 110.8,207.

asphaltic mix. The receiver 1 is provided with side walls 2, a rear wall 4 and a bottom 5, which inclines to the rear of the receiver and terminates in an apron 6, which'as seen 1n Figs. 2, 3, aud t, extends below the rear wall 4: and side walls 2 of the receiver providing between such apron and rear Wall it a longitudinally extending throat 7, the transverse area of which is arranged to be determined by ablade 8, which as pointed out presently is ,operable upon and'relative tosaid rear wall 4. Therear wall 4' is in clined to thewertical and co-operates with the inclined bottom 5 in discharging the contents of the receiver.

The blade 8, referred to, is'movable vertically relative to the bottom edge of the res PATENT oFFicE.

rear wall 4 of the receiver "to regulate the extent of the throat and control the quantity of 'inaterial discharging from the receiver.

To effect this movement of the blade, I may 3, and consisting of means, as a crank 9 having threaded engagement with the rear wall 4 and swiveled to the blade "8, whereby upon turning the crank 9, the blade 8 will be operated in a vertical direction. Owing to provide such means .as shown in Figs. 2 and the length of the blade 8, and the necessity secured upon the rear wall t and disposedat an angle to each other. Thereby one endof the blade 8 may be readily elevated to greater extent than the other, for the purposes mentioned." The blade 8 may. be provided with a means for increasing the width of the asphaltie deposit and for striking off the deposited material to thelevel desired. Such a means is shown in Figs. 1, 2, and 3, asjcomprising aplate 12 mounted upon the blade-""8 and late-rally'operable in suitable guides'13 relative to said blade. The strike off plate 12 may be provided with a rack 12' arranged for engagement by a pinion 12" to operate thebla cured upon a crank 14 which is in convenient position for manual operation, from a-plate The pinion 12 1s se 1 10 form 15, which is hingedly mounted upon the rearof the receiver 1, and serves to form a convenient support for the operator during the traverse of the device over, the ground. As seen, the receiver 1 18 mounted upon a frame structure 16, Fig. 3, over and beyond which the throat 7 of the receiver extends.

' mixture and serving to cause the contents of the receiver to flow evenlyfrom the re ceiver in continuous manner.'

Provision may also be made and included in the structure detailed herein for regulating the width of the deposit, that is,'for causing the deposit to be made within limits narrower than defined by the normal width of the structure. This may be ac-" complished by an arrangement as shown in Figs. 1 and 2 and consistingof partitions 19 movable relative ,to the threat 7 the side Walls 2, and the rear wall 4. These partitions 19 are pivotally secured to said side walls 2 and the pivotal. mount for each said partition may comprise, as shown, a rod 20 fastened to the forward edge of each partition and an eye 'bolt 21 through which said rod 20 is extended. The eye bolt 21 of each partition 19 extends through rearwardly in the side walls 2. By chain and gear mechanism, generally shown at 30, power is derived from the rear roller 18 to revolve said shaft 26 and stir the asphaltic mixture. 1: will be obvious. that the partitions 19 are removed from the receiver, to accommodate the installation of the stirring and heating apparatus. 5

The rear wall 4 is reinforced and protected against bulging, buckling and undue strain from the load within by'suitable brace rods 31, Which are securely fastened to. the bottom 5 and to said rear wall. I lVhat Iclaim, is:

1. An apparatus for spreading hot materials comprising a: receiver for the -mater'ials, having a rearwardly inclining bot- 7 tom anda rear wall at an angle to the vertical, the bottom of said rear Wall spaced froin the bottom of said receiver to provide a discharge throat,-means movable onsaidrear wall to control the transverse area of said throat, and rollers arranged in pairs supporting said receiver above the surface'operated over.

;2. An apparatus for spreading hot materials comprising areceiver for the materials, having a rearwardly'inclining botcliningslotways 22, in the side walls 2, and 'tom and a rear wall spaced from said boton said said eye bolts are cam or other handles 23 provided to lock said partitions 19 in position after adjustment of same has been effected for the purposes mentioned; to

' wit, reducing the throat area in width in order to narrow the discharge of theasphaltic concrete. To resist displacement of the rear ends of'said partitions 19, I prefer to provide on each'partition a stud 24 extend ing rearWardly-beyond same and arranged to engage holes 25 in the rear wall 4, a nunr ber of such holes 25 being provided in prac- 1 tieally a horizontal line and spaced to provide the adjustment necessary for width of the discharge required.

It will be noticed that the -slotways 22 in the sidewalls are parallel to the bottonri5 this construction being needed to insure a constant contact of the bottom ofthe partitions 19 with the bottom 5 of the receiver 1 1, and maintain the connection with tlie side Walls. 1 y 7 altic mixes, it may be 7 desirable to keep the ingredients heated and When using hot asph in a state of motion to prevent setting. I have illustrated a form of device that may be conveniently applied toand removed from the receiver 1 without interferring with the tom and providing a throat for the discharge of the material, means on? and movable rel ative to said rear wall to control the transto control the width of said throat, strike ofi' means for the material, said means laterally movable relative to said first named means, and rolling means supporting said receiver. above and free ofthe ground.

3. An apparatus for speeding hot materials comprising a receiver having a rearwardly inclining b'ottom,.-.andta rear wall spaced from said bottomto provide a throat, peans movable on said rear wall to control tie transverse area of said throat, roller means supporting said receiver abovethe ground and disposed free of the throat,- in said receiver, strike-off means on and movable with and laterally to'said control means, and means to control the movement of said strike-off means. y K

4. An apparatus for spreading hot materials comprising a receiver, having an inclined' bottom and an inclined'rear wall for the material, roller means supporting said casing entirely above-and free of the Y ground and disposed forward of the throat in said receiver, a blade on said rear wall movable relative thereto and to the throat to control the transverse area of said throat, means to operate said blade, partitions connected with said receiver and movable relative thereto andto said throat to control the. Width of the throat, a strike-ofiplate on and movable with and relative to' said blade, and means to operate said strike-01f plate. a v

5. An apparatus for. spreading road mate rials comprising a receiver for the material having a discharge throatjin the rear thereof, a means to regulate the transverse area of saidthroat to control the depth of mate: rial I laid, adjustable means within sald receiver to regulate the'width' of'the throat to control the width of the material laid, and means to lock said adjustable means in POSI- tion of adjustment. 7 1

6. An apparatus for spreadin road materials comprising a receiver f0r t e materials having a discharge throat in the rear thereof, a blade movable on saidreEeiver to con'. ,trol the transverse area of said throat, means to operate said blade, and-means on said blade forming extensions of same to control the deposit of the material beyond the normal limits of the apparatus, and comprising plates having wings forming end walls for the throat, and means to operate said plates relative to sa'id blade. g

7. An apparatus for spreadmg hot road materials comprising a receiver having a rear discharge throat, roller means support:- ing said receiver, entlrely above the ground;

a blade to control the transverse area of the throat to regulate the depth of the material laid, plates on said blade forming extensions' thereof to. control the deposit of the material beyond the normal limits of the apparatus, means to agitate said material, andmeans to heat said agitating means.

8. An apparatus for spreading hotroad materials comprising a receiver having a rear discharge throat, roller means supporting said receiver entirely above the ground, a.

blade to control thetransverse area of the throat toregulate the depth of the material laid, means to operate said blade, plates on" said blade forming extensions thereof to com the bottom of said rear wall spaced from the bottom of said receiver to provide a dischargethroat, means on and movable rela- .ceiver to re tive to said rear wall to control the trans;

verse area'of said throat, and selective means to control the deposit of material through said thrdat beyond the sides of ,the apparatus.

10. An apparatus for spreading hot mate- I rials comprising a receiver for the materials havinga rearwardly' inclining bottom and a rear wall spaced from the'bottom. of

said receiver to provide a discharge throat, and means to heat. the materlal 1n sa1d recelver.

' 11. An apparatusforspreading hotniaterials comprising a receiver for-the materials, having'a rearw'ardly mchnmg bottom and a rear wall spaced from said bottom and providing a throat for the discharge of the' material, means on and movable relative to said gear-wall to control the transverse area--of said throat and means movable relative to the side walls and said throat to control the width of said throat japparatusforspreading hot materials comprisinga receiver having a reare 1 wardlv inclining bottom, and a rear wall spaced from said bottom-to provide a. throat, means movable on said rear wall to control the transverse area of said throat, means.

-1novable relative to the side walls to control the widthiof the throat, roller'means sup-' porting said receiver above the ground and disposed free of the throat in said receiver,

and laterally to said control means.

-,13.-An apparatus 'for spreading hot ma-' terials com rising a rece pver having a. rearwardl inc inin space from sai bottom to provide a throat, means movable on said rear wall to control the transverse area of said throat, means movable relative to the side walls to control and strike-off ineans 'on and movablecwith' bottom, and a rear wall.

the width-of the throat, roller meanssup-p strike-off means on said controlmea'ns porting said receiver above the ground and. disposed free of the throat in said receiver, 7 w an no 14. Anapparatus for spreading road ma-J terialscomprising a receiver forthe mate-- rialhaving a discharge throat in the rear j area of said throat to control the depth of material laid, and means within said rethrough said throat -beyond the sides of the apparatus. I

tenals comprising "a receiver for the mate-- rial havinga discharge throat in the rear thereof, means to regulate 'thetransverse thereof, a'means to regulate the transvei se T g"- latethe width of the throat to control t e width of the material laid,

and meanstocont the deposit of material ee I 15 apparatus for spreading road mearea of the throat to, control the depth of material laid, means to regulate the longitudinal area of the throatto control. the

, width of the material laid, roller means supportmg the receiver above the ground and men means laterally movable relative to the re ceiver to strike off deposited material.

' terial.

16. An apparatus for spreading hot materials comprising a receiver having a discharge throat in the rear thereof, a blayle to regulate the transverse area of'said throat to control the depth of material laid, rollermeans supporting said receiver above the ground and free of the throat therein, and means on and laterally movable relatively to said blades to strike off deposited ma- :17'. -'An apparatus for spreading. hot materials comprising a receiver having a discharge throat in the rear thereof, a means to regulate the transverse area of said throat to control the depth of materiallaid, roller means supporting said receiver entirely above the surface operated over, means to heat the material, and a platform longitudinally of said receiver and, above the surface of the material laid.

18 An apparatus forspreadingh0t materials comprising a receiver having a disthe trol the depth of material 1aid,:and. means ,4 above the surface of the material laid.-

, p 'charEe' PQIIing therein, a means to regulate ransverse area of said opening to con- I i on vsaid receiver to strike oif deposited material.

1 9. An apparatus for spreading road mater1alsc0mpris1ng a receiver having a dlscharge opening therein, a means to regulate the transverse area of said opening to conthe transverse area of said opening to con- 4 trol the depth o'f'material laid, roller means supporting said receiver above the ground and free of the opening therein, and a platform longitudinally of the receiver and In testimony whereof I have set my hand,

" MARK M. BUTLER. 

